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Bicameralism is a type of legislature that is divided into two separate assemblies, chambers, or houses, known as a bicameral legislature.Bicameralism is distinguished from unicameralism, in which all members deliberate and vote as a single group.
The veld ecosystem relies on periodic fire disturbances like these to rejuvenate itself. In ecology, a disturbance is a temporary change in environmental conditions that causes a pronounced change in an ecosystem. Disturbances often act quickly and with great effect, to alter the physical structure or arrangement of biotic and abiotic elements.
The Aral Sea is an example of a collapsed ecosystem. [1] (image source: NASA) An ecosystem, short for ecological system, is defined as a collection of interacting organisms within a biophysical environment. [2]: 458 Ecosystems are never static, and are continually subject to both stabilizing and destabilizing processes. [3]
In ecology, resilience is the capacity of an ecosystem to respond to a perturbation or disturbance by resisting damage and subsequently recovering. Such perturbations and disturbances can include stochastic events such as fires, flooding, windstorms, insect population explosions, and human activities such as deforestation, fracking of the ground for oil extraction, pesticide sprayed in soil ...
Disturbance is an event that significantly alters the pattern of variation in the structure or function of a system. Fragmentation is the breaking up of a habitat, ecosystem, or land-use type into smaller parcels. [6] Disturbance is generally considered a natural process.
Although definitions of ecosystem management abound, there is a common set of principles which underlie these definitions: A fundamental principle is the long-term sustainability of the production of goods and services by the ecosystem; [52] "intergenerational sustainability [is] a precondition for management, not an afterthought". [43]
An example of such "whole-community" facilitation is substrate stabilization of cobble beach plant communities in Rhode Island, US, by smooth cordgrass (Spartina alterniflora). [6] Large beds of cordgrass buffer wave action, thus allowing the establishment and persistence of a community of less disturbance-tolerant annual and perennial plants ...
Ecological threshold is the point at which a relatively small change or disturbance in external conditions causes a rapid change in an ecosystem.When an ecological threshold has been passed, the ecosystem may no longer be able to return to its state by means of its inherent resilience.